Vampire Mk6 EDF Hobbyking Durafly upgrades and changes ducted fan

De Vampire edf 4s 2200mah by hobbyking ,balanced fan, stock set up ,7mm carbon tube to reinforce both tail booms ,outlet reduced to 85% FSA ,outlet raised (2-3 mm) to give up thrust, retracts are good, added pilot bit of weathering 15oz wing loading so floats like a glider on landing , C of G moved forward for stability 10mm .This plane is now easy to fly and I would recommend you go get one.